These top-quality firing pins are precision turned from heat-treated steel and are the proper weight for positive ignition with heavy duty springs and any type primer. Minor fitting may be required.
Average diameter of 1911 .45 caliber firing pins is .095"-.096" at tip. The average diameter of 1911 .38 Super and 9mm caliber firing pins is .070"-.071" at tip. If the firing pin caliber needed is not known, check the hole size in the recoil face to determine the caliber firing pin needed for your slide before ordering.
This is a series 70 firing pin, for use in Springfield made 1911 type pistols.